common.c revision 64b889b39e9958fdcfe5e9b7aa1ac0ffca3fc9a2
1b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn/* 2b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * This file contains common code that is intended to be used across 3b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * boards so that it's not replicated. 4b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * 5b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * Copyright (C) 2011 Xilinx 6b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * 7b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * This software is licensed under the terms of the GNU General Public 8b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * License version 2, as published by the Free Software Foundation, and 9b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * may be copied, distributed, and modified under those terms. 10b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * 11b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * This program is distributed in the hope that it will be useful, 12b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * but WITHOUT ANY WARRANTY; without even the implied warranty of 13b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * GNU General Public License for more details. 15b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 16b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 17b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/init.h> 18b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/kernel.h> 19b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/cpumask.h> 20b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/platform_device.h> 21b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/clk.h> 220f586fbf6f6a9119392a5cb0f193ac11c753b09eJosh Cartwright#include <linux/clk/zynq.h> 23e932900a3279b5dbb6d8f43c7b369003620e137cMichal Simek#include <linux/clocksource.h> 240f586fbf6f6a9119392a5cb0f193ac11c753b09eJosh Cartwright#include <linux/of_address.h> 25b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/of_irq.h> 26b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <linux/of_platform.h> 273d64b4496f5fd90618106555344205a522178c0cArnd Bergmann#include <linux/of.h> 28c067561759dec2a4aac0b9d9bcfaa2a3771e8decMichal Simek#include <linux/irqchip.h> 29b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 303d64b4496f5fd90618106555344205a522178c0cArnd Bergmann#include <asm/mach/arch.h> 31b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <asm/mach/map.h> 3203e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright#include <asm/mach/time.h> 333d64b4496f5fd90618106555344205a522178c0cArnd Bergmann#include <asm/mach-types.h> 34b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <asm/page.h> 359a45eb691d8712b64a733178746557f708043444Josh Cartwright#include <asm/pgtable.h> 36732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek#include <asm/smp_scu.h> 37b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include <asm/hardware/cache-l2x0.h> 38b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 39b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn#include "common.h" 40b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 41732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simekvoid __iomem *zynq_scu_base; 42732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 43b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linnstatic struct of_device_id zynq_of_bus_ids[] __initdata = { 44b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn { .compatible = "simple-bus", }, 45b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn {} 46b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn}; 47b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 48b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn/** 49b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * xilinx_init_machine() - System specific initialization, intended to be 50b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * called from board specific initialization. 51b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 523d64b4496f5fd90618106555344205a522178c0cArnd Bergmannstatic void __init xilinx_init_machine(void) 53b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn{ 54b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn /* 55b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * 64KB way size, 8-way associativity, parity disabled 56b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 570fcfdbcacf6fa234064126e5b18c720ca27bc6e7Josh Cartwright l2x0_of_init(0x02060000, 0xF0F0FFFF); 58b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 59b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn of_platform_bus_probe(NULL, zynq_of_bus_ids, NULL); 60b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn} 61b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn 6203e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwrightstatic void __init xilinx_zynq_timer_init(void) 6303e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright{ 6464b889b39e9958fdcfe5e9b7aa1ac0ffca3fc9a2Michal Simek zynq_slcr_init(); 65c5263bb8b7944f1e34b36b5ea8a9119fc48a31aeMichal Simek clocksource_of_init(); 6603e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright} 6703e07595febc4857b2b6ad756826f369c7628ec8Josh Cartwright 68732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simekstatic struct map_desc zynq_cortex_a9_scu_map __initdata = { 69732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek .length = SZ_256, 70732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek .type = MT_DEVICE, 71732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek}; 72732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 73732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simekstatic void __init zynq_scu_map_io(void) 74732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek{ 75732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek unsigned long base; 76732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 77732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek base = scu_a9_get_base(); 78732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_cortex_a9_scu_map.pfn = __phys_to_pfn(base); 79732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek /* Expected address is in vmalloc area that's why simple assign here */ 80732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_cortex_a9_scu_map.virtual = base; 81732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek iotable_init(&zynq_cortex_a9_scu_map, 1); 82732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_scu_base = (void __iomem *)base; 83732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek BUG_ON(!zynq_scu_base); 84732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek} 85732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek 86b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn/** 87b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn * xilinx_map_io() - Create memory mappings needed for early I/O. 88b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn */ 893d64b4496f5fd90618106555344205a522178c0cArnd Bergmannstatic void __init xilinx_map_io(void) 90b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn{ 91385f02b1696004461d89589e69ae7247081a74a2Josh Cartwright debug_ll_io_init(); 92732078c369f0b6ad9fe75c1faff721e91260bc5dMichal Simek zynq_scu_map_io(); 93b85a3ef4ac65169b65fd2fe9bec7912bbf475ba4John Linn} 943d64b4496f5fd90618106555344205a522178c0cArnd Bergmann 953d64b4496f5fd90618106555344205a522178c0cArnd Bergmannstatic const char *xilinx_dt_match[] = { 96e06f1a9ed7ebff170ba05d2606d079fb36c6a52dJosh Cartwright "xlnx,zynq-zc702", 97e06f1a9ed7ebff170ba05d2606d079fb36c6a52dJosh Cartwright "xlnx,zynq-7000", 983d64b4496f5fd90618106555344205a522178c0cArnd Bergmann NULL 993d64b4496f5fd90618106555344205a522178c0cArnd Bergmann}; 1003d64b4496f5fd90618106555344205a522178c0cArnd Bergmann 1013d64b4496f5fd90618106555344205a522178c0cArnd BergmannMACHINE_START(XILINX_EP107, "Xilinx Zynq Platform") 1023d64b4496f5fd90618106555344205a522178c0cArnd Bergmann .map_io = xilinx_map_io, 1030529e315bbda5d502c93df2cfafba9bb337fbdf4Rob Herring .init_irq = irqchip_init, 1043d64b4496f5fd90618106555344205a522178c0cArnd Bergmann .init_machine = xilinx_init_machine, 1056bb27d7349db51b50c40534710fe164ca0d58902Stephen Warren .init_time = xilinx_zynq_timer_init, 1063d64b4496f5fd90618106555344205a522178c0cArnd Bergmann .dt_compat = xilinx_dt_match, 1073d64b4496f5fd90618106555344205a522178c0cArnd BergmannMACHINE_END 108